Possible Duplicate:
How do I upgrade from 11.04 to 11.10?
Today i was playing with an old netbook (Msi Wind U100) I have with Ubuntu 11.04... I've updated it to the last updates and rebooted... the problem is, I want to update from Ubuntu 11.04 to Ubuntu 11.10 but there is simply no option available at all...
And when I try with update-manager -d the messages that appears tells me that the versions that he is about to install is the Release Candidate version so I cancel it..
How can I solve this problem ?